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Richard C. Banks

Publications and source records attributed to Richard C. Banks.

At least 127 records · Page 7Linked to original sources
USGS1970

Records of the brambling in North America

A Brambling, Fringella montifringella , was seen regularly in Portland, Oregon, from 22 November 1967 to 3 April 1968 and photographed by many people. First discovered at a feeder in the northeast section of the city by Jeff Gilligan and Ron Klein, from January on it was a daily visitor to the feeder of the Albert H. Praels in the same part of Portland. The bird, judged by plumage to be a male, fed regularly with House Finches ( Carpodacus mexicanus ) on sunflower seeds. The occurrence of this individual in Portland was recorded in Audubon Field Notes (22: 471, 1968) without detail.

The Auk↗
USGS1970

Molt and taxonomy of red-breasted nuthatches

The postnuptial and postjuvenal molts of Red-breasted Nuthatches occur from middle June to late September. Some birds may be nearly finished with the complete molt before other individuals begin, so that specimens taken at any given time may differ by as much as two months in the age of their plumage. No characters useful in ageing birds after the completion of the autumn molt were found.....The proposed racial subdivision of Sitta canadensis was based on misleading evidence resulting from variation of plumage age in birds assumed to be seasonally comparable, sooting of birds in industrialized parts of the country, and variation in quality of prepared specimens.

The Wilson Bulletin↗
USGS1969

Relationships of the avifauna of San Esteban Island, Sonora

Seven species of geographically variable birds have been reported as part of the resident avifauna of San Esteban Island in the Gulf of California, Sonora. Two of these, the Curvebilled Thrasher and the Blue-gray Gnatcatcher, may not actually have breeding populations there, at least at the present time. Of the seven, only two, the Verdin and the doubtfully resident thrasher, can be used in a determination of the relationships of the avifauna, and both show affinities to that of Sonora. The Ash-throated Flycatcher and the House Finch are represented by the same form on San Esteban and in both Sonora and Baja California at the latitude of the island. Neither the Ladder-backed Woodpecker nor the endemic Black-throated Sparrow shows greater similarity to the Baja California or Sonoran avifauna. The slight balance of evidence indicates that the avifauna of San Esteban Island is best considered with that of Sonora.

San Estéban Island↗
USGS1969

Taxonomy of the common dolphins of the eastern Pacific Ocean

Delphinus bairdii Dall is a species of dolphin distinct from D. delphis Linnaeus, with which it has usually been synonymized. D. bairdii has a longer rostrum relative to the zygomatic width of the skull; the ratio of these measurements falls at 1.55 or above for bairdii and 1.53 and below for delphis. In the eastern Pacific Ocean, D. bairdii is found in the Gulf of California and along the west coast of Baja California, Mexico; D. delphis is presently found in the waters off California. Until approximately the beginning of the present century, bairdii occurred farther north in the eastern Pacific Ocean, at least to the Monterey Bay area of California. Restriction of bairdii to more southerly waters, probably as an indirect result of a change in water temperature, may have permitted delphis to move into inshore Californian waters. The Pacific population of D. delphis has a somewhat shorter rostrum than the Atlantic population, and is perhaps subspecifically different. A thorough analysis of the entire genus Delphinus is needed before the relationship of all the populations can be understood and names properly applied.

Baja, California, Gulf of California↗
USGS1968

The red-whiskered bulbul in Florida

The establishment of a feral population of the Red-whiskered Bulbul ( Pycnonotus jocosus ) in the environs of Miami, Dade County, Florida, was reported by L. A. Stimson (Florida Naturalist, 35: 93, 1962). Bulbuls were present in Kendall, just south of Miami, in the spring of 1961, and apparently raised young there that summer. In the fall of that year, bulbuls were also seen in the vicinity of Princeton, approximately 35 miles southwest of Miami. Confirmation of nesting at Kendall was presented in 1962 (Aud. Field Notes, 16: 402, 1962). By 1964 the population of bulbuls in Kendall was estimated at 40 to 50 (Aud. Field Notes, 18: 349, 1964)

The Auk↗
USGS1968

Bairds's junco

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Book chapter↗